feat(stm32mp15-fdts): add support for prtt1x board family
Add one device tree to support a family of boards (PRTT1C, PRTT1S,
PRTT1A) based on STM32MP151AAD3, used as sensors and actuators for
industrial, 10BaseT1L based networks.
This change was tested with barebox 2022.12.0 bootloader and kernel
v6.2.0-rc1.
Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Change-Id: Ibab9933eadd7aa379ae0a7c7ccbfc2fbb9a44ca8
diff --git a/fdts/stm32mp151a-prtt1a.dts b/fdts/stm32mp151a-prtt1a.dts
new file mode 100644
index 0000000..be9bdae
--- /dev/null
+++ b/fdts/stm32mp151a-prtt1a.dts
@@ -0,0 +1,235 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (C) 2023, Protonic Holland - All Rights Reserved
+ * Author: David Jander <david@protonic.nl>
+ */
+/dts-v1/;
+
+#include "stm32mp151.dtsi"
+#include "stm32mp15-pinctrl.dtsi"
+#include "stm32mp15xxad-pinctrl.dtsi"
+#include <dt-bindings/clock/stm32mp1-clksrc.h>
+#include "stm32mp15-ddr3-1x2Gb-1066-binG.dtsi"
+
+/ {
+ model = "Protonic PRTT1A";
+ compatible = "prt,prtt1a", "st,stm32mp151";
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ aliases {
+ mmc0 = &sdmmc1;
+ mmc1 = &sdmmc2;
+ serial0 = &uart4;
+ };
+
+ memory@c0000000 {
+ device_type = "memory";
+ reg = <0xC0000000 0x10000000>;
+ };
+};
+
+&iwdg2 {
+ timeout-sec = <32>;
+ status = "okay";
+ secure-status = "okay";
+};
+
+&qspi {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&qspi_clk_pins_a &qspi_bk1_pins_a>;
+ reg = <0x58003000 0x1000>, <0x70000000 0x4000000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ flash@0 {
+ compatible = "spi-nand";
+ reg = <0>;
+ spi-rx-bus-width = <4>;
+ spi-max-frequency = <104000000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+};
+
+&qspi_bk1_pins_a {
+ pins1 {
+ bias-pull-up;
+ drive-push-pull;
+ slew-rate = <1>;
+ };
+};
+
+&rcc {
+ st,clksrc = <
+ CLK_MPU_PLL1P
+ CLK_AXI_PLL2P
+ CLK_MCU_PLL3P
+ CLK_PLL12_HSE
+ CLK_PLL3_HSE
+ CLK_PLL4_HSE
+ CLK_RTC_LSI
+ CLK_MCO1_DISABLED
+ CLK_MCO2_DISABLED
+ >;
+
+ st,clkdiv = <
+ 1 /*MPU*/
+ 0 /*AXI*/
+ 0 /*MCU*/
+ 1 /*APB1*/
+ 1 /*APB2*/
+ 1 /*APB3*/
+ 1 /*APB4*/
+ 2 /*APB5*/
+ 23 /*RTC*/
+ 0 /*MCO1*/
+ 0 /*MCO2*/
+ >;
+
+ st,pkcs = <
+ CLK_CKPER_HSE
+ CLK_FMC_ACLK
+ CLK_QSPI_ACLK
+ CLK_ETH_DISABLED
+ CLK_SDMMC12_PLL4P
+ CLK_DSI_DSIPLL
+ CLK_STGEN_HSE
+ CLK_USBPHY_HSE
+ CLK_SPI2S1_PLL3Q
+ CLK_SPI2S23_PLL3Q
+ CLK_SPI45_HSI
+ CLK_SPI6_HSI
+ CLK_I2C46_HSI
+ CLK_SDMMC3_PLL4P
+ CLK_USBO_USBPHY
+ CLK_ADC_CKPER
+ CLK_CEC_LSI
+ CLK_I2C12_HSI
+ CLK_I2C35_HSI
+ CLK_UART1_HSI
+ CLK_UART24_HSI
+ CLK_UART35_HSI
+ CLK_UART6_HSI
+ CLK_UART78_HSI
+ CLK_SPDIF_PLL4P
+ CLK_FDCAN_PLL4R
+ CLK_SAI1_PLL3Q
+ CLK_SAI2_PLL3Q
+ CLK_SAI3_PLL3Q
+ CLK_SAI4_PLL3Q
+ CLK_RNG1_LSI
+ CLK_RNG2_LSI
+ CLK_LPTIM1_PCLK1
+ CLK_LPTIM23_PCLK3
+ CLK_LPTIM45_LSI
+ >;
+
+ /* VCO = 1300.0 MHz => P = 650 (CPU) */
+ pll1: st,pll@0 {
+ compatible = "st,stm32mp1-pll";
+ reg = <0>;
+ cfg = <2 80 0 0 0 PQR(1,0,0)>;
+ frac = <0x800>;
+ };
+
+ /* VCO = 1066.0 MHz => P = 266 (AXI), Q = 533 (GPU), R = 533 (DDR) */
+ pll2: st,pll@1 {
+ compatible = "st,stm32mp1-pll";
+ reg = <1>;
+ cfg = <2 65 1 0 0 PQR(1,1,1)>;
+ frac = <0x1400>;
+ };
+
+ /* VCO = 417.8 MHz => P = 209, Q = 24, R = 11 */
+ pll3: st,pll@2 {
+ compatible = "st,stm32mp1-pll";
+ reg = <2>;
+ cfg = <1 33 1 16 36 PQR(1,1,1)>;
+ frac = <0x1a04>;
+ };
+
+ /* VCO = 480.0 MHz => P = 120, Q = 40, R = 96 */
+ pll4: st,pll@3 {
+ compatible = "st,stm32mp1-pll";
+ reg = <3>;
+ cfg = <1 39 3 11 4 PQR(1,1,1)>;
+ };
+};
+
+&rng1 {
+ status = "okay";
+};
+
+&rtc {
+ status = "okay";
+};
+
+&sdmmc1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&sdmmc1_b4_pins_a>;
+ bus-width = <4>;
+ status = "okay";
+};
+
+&sdmmc1_b4_pins_a {
+ pins1 {
+ bias-pull-up;
+ };
+ pins2 {
+ bias-pull-up;
+ };
+};
+
+/* NOTE: Although the PRTT1A does not have an eMMC, we declare it
+ * anyway, in order to be able to use the same binary for the
+ * PRTT1C also. All involved pins are N.C. on PRTT1A/S for that
+ * reason, so it should do no harm. All inputs configured with
+ * pull-ups to avoid floating inputs. */
+&sdmmc2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&sdmmc2_b4_pins_a &sdmmc2_d47_pins_a>;
+ bus-width = <8>;
+ status = "okay";
+};
+
+&sdmmc2_b4_pins_a {
+ pins1 {
+ pinmux = <STM32_PINMUX('B', 14, AF9)>, /* SDMMC2_D0 */
+ <STM32_PINMUX('B', 7, AF10)>, /* SDMMC2_D1 */
+ <STM32_PINMUX('B', 3, AF9)>, /* SDMMC2_D2 */
+ <STM32_PINMUX('B', 4, AF9)>, /* SDMMC2_D3 */
+ <STM32_PINMUX('G', 6, AF10)>; /* SDMMC2_CMD */
+ };
+};
+
+&sdmmc2_d47_pins_a {
+ pins {
+ pinmux = <STM32_PINMUX('A', 8, AF9)>, /* SDMMC2_D4 */
+ <STM32_PINMUX('A', 9, AF10)>, /* SDMMC2_D5 */
+ <STM32_PINMUX('C', 6, AF10)>, /* SDMMC2_D6 */
+ <STM32_PINMUX('C', 7, AF10)>; /* SDMMC2_D7 */
+ };
+};
+
+&uart4 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart4_pins_a>;
+ status = "okay";
+};
+
+&uart4_pins_a {
+ pins1 {
+ pinmux = <STM32_PINMUX('B', 9, AF8)>; /* UART4_TX */
+ bias-disable;
+ drive-push-pull;
+ slew-rate = <0>;
+ };
+ pins2 {
+ pinmux = <STM32_PINMUX('B', 2, AF8)>; /* UART4_RX */
+ bias-pull-up;
+ };
+};